/*
 *  eXist Open Source Native XML Database
 *  Copyright (C) 2001-07 The eXist Project
 *  http://exist-db.org
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *  $Id: Connection.java 189 2007-03-30 15:02:18Z dizzzz $
 */

package org.exist.protocolhandler.protocols.xmldb;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;

import org.apache.log4j.Logger;
import org.exist.protocolhandler.embedded.EmbeddedInputStream;
import org.exist.protocolhandler.embedded.EmbeddedOutputStream;
import org.exist.protocolhandler.xmldb.XmldbURL;
import org.exist.protocolhandler.xmlrpc.XmlrpcInputStream;
import org.exist.protocolhandler.xmlrpc.XmlrpcOutputStream;

/**
 *  A URLConnection object manages the translation of a URL object into a
 * resource stream.
 *
 * @see <A HREF="http://java.sun.com/developer/onlineTraining/protocolhandlers/"
 *                                     >A New Era for Java Protocol Handlers</A>
 *
 * @see java.net.URLConnection
 *
 * @author Dannes Wessels
 */
public class Connection extends URLConnection {
    
    private final static Logger LOG = Logger.getLogger(Connection.class);
    
    /**
     * Constructs a URL connection to the specified URL.
      */
    protected Connection(URL url) {
        super(url);
        LOG.debug(url);
        
        setDoInput(true);
        setDoOutput(true);
    }
    
    /**
     * @see java.net.URLConnection#connect
     */
    public void connect() throws IOException {
        LOG.debug(url) ;
    }
    
    /**
     * @see java.net.URLConnection#getInputStream
     */
    public InputStream getInputStream() throws IOException {
        LOG.debug(url) ;
        
        InputStream inputstream=null;
        XmldbURL xmldbURL = new XmldbURL(url);
        
        if(xmldbURL.isEmbedded()){
            inputstream = new EmbeddedInputStream( xmldbURL );
        } else {
            inputstream = new XmlrpcInputStream( xmldbURL );
        }
        
        return inputstream;
    }
    
    
    /**
     * @see java.net.URLConnection#getOutputStream
     */
    public OutputStream getOutputStream() throws IOException {
        LOG.debug(url) ;
        
        OutputStream outputstream=null;
        XmldbURL xmldbURL = new XmldbURL(url);
        
        if(xmldbURL.isEmbedded()){
            outputstream = new EmbeddedOutputStream( xmldbURL );
        } else {
            outputstream = new XmlrpcOutputStream( xmldbURL );
        }
        
        return outputstream;
    }
}